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Title: Metabolite Damage and Damage Control in a Minimal Genome

Journal Article · · mBio (Online)
 [1];  [1];  [1];  [1];  [2];  [1];  [2];  [1];  [1];  [3];  [4];  [5];  [5];  [6];  [7];  [8];  [8];  [8];  [8];  [1] more »;  [9];  [1] « less
  1. University of Florida, Gainesville, FL (United States)
  2. J. Craig Venter Institute, La Jolla, CA (United States)
  3. Maastricht University (Netherlands)
  4. University of Illinois at Urbana-Champaign, IL (United States)
  5. University of Nebraska, Lincoln, NE (United States)
  6. Uniersity of Toronto, ON (Canada); Bangor University (United Kingdom)
  7. University of Toronto, ON (Canada)
  8. University of California, Davis, CA (United States)
  9. Argonne National Lab. (ANL), Argonne, IL (United States); University of Chicago, IL (United States)

Analysis of the genes retained in the minimized Mycoplasma JCVI-Syn3A genome established that systems that repair or preempt metabolite damage are essential to life. Several genes known to have such functions were identified and experimentally validated, including 5-formyltetrahydrofolate cycloligase, coenzyme A (CoA) disulfide reductase, and certain hydrolases. Furthermore, we discovered that an enigmatic YqeK hydrolase domain fused to NadD has a novel proofreading function in NAD synthesis and could double as a MutT-like sanitizing enzyme for the nucleotide pool. Finally, we combined metabolomics and cheminformatics approaches to extend the core metabolic map of JCVI-Syn3A to include promiscuous enzymatic reactions and spontaneous side reactions. This extension revealed that several key metabolite damage control systems remain to be identified in JCVI-Syn3A, such as that for methylglyoxal.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
J. Craig Venter Institute (JCVI); National Science Foundation (NSF)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1889733
Journal Information:
mBio (Online), Journal Name: mBio (Online) Journal Issue: 4 Vol. 13; ISSN 2150-7511
Publisher:
American Society for Microbiology (ASM)Copyright Statement
Country of Publication:
United States
Language:
English

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